sp10_5a_106_Quake1

sp10_5a_106_Quake1 - Accumulation of Energy: Elastic...

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Accumulation of Energy: Elastic Rebound Theory May be foreshocks and aftershocks 13 weeks after 2004 Indonesian Quake
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What happens when the fault ruptures? Energy is Released as Seismic Waves
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Seismic Waves - Body Waves P Waves S Waves Seismic Waves - Surface Waves Love Waves Rayleigh Waves
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Wave Summary Wave Type Motion Velocity (crust) Notes P ( P rimary) Waves Body: P ressure (“ p ushes” & p ulls”) 5-7 km/sec First to arrive, travels fastest through solids S ( S econdary) Waves Body: S hear (up & down) 3-4 km/sec Can’t travel through fluids Rayleigh (R) Waves Surface: Up & down, rolling 2-4 km/sec Similar to water waves Love (L) Waves Surface: Side to Side 2-4 km/sec Usually a little faster than Rayleigh Waves Wave animations: http://web.ics.purdue.edu/~braile/edumod/waves/WaveDemo.htm Measuring Seismic Waves: Seismograph
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Seismograph China - 132 A.D. Seismogram
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Measuring Earthquakes Richter Scale Increase of 1 unit on Richter Scale equals: 10x increase in wave amplitude
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This note was uploaded on 01/11/2012 for the course GEO 106 taught by Professor Robviens during the Spring '10 term at Bellevue College.

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sp10_5a_106_Quake1 - Accumulation of Energy: Elastic...

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